向矩阵添加行 add_row_to_matrix <- function(matrix_data, row_data){ # 创建一个新的矩阵,增加一行 new_matrix <- rbind(matrix_data, row_data) # 检查是否还需要添加更多的行 if(condition){ # 调用递归函数,继续添加行 new_matrix <- add_row_to_matrix(new_matrix, new_row_data) } retu...
Here are some examples demonstrating how to use thecbind()function to add columns to a matrix in R: Example 1: Combining Two Matrices In this example, we create two matrices with identical row counts. By applying thecbind()function, we horizontally combine these matrices. ...
但是如果你想在一般情况下得到答案，你必须手动“切割”你的一个向量。
> row.names(df) has_rownames(df) [1] TRUE 去掉行名 > remove_rownames(df) x y 1 1 3 2 2 2 3 3 1 把行名转换为单独的一列 > df2 column_to_rownames(df2, var = "rowname") x y A 1 3 B 2 2 C 3 1 把行索引转换为单独的一列 > rowid_to_column(df, var = "rowid") r...
Similar to vectors, you can add names for the rows and the columns of a matrix rownames(my_matrix) <- row_names_vectorcolnames(my_matrix) <- col_names_vector We went ahead and prepared two vectors for you:region, andtitles. You will need these vectors to name the columns and rows of...
把matrix转型为tibble。 生成一个matrix > m df 1 0.8436494 2.1420238 0.2690392 -0.4752708 -0.2334994 2 1.0363340 0.8653771 -0.3200777 -1.7400856 1.2253651 3 -0.2170344 -1.1346455 0.2204718 1.2189431 0.7020156 tibble转为matrix > as.matrix(df) V1 V2 V3 V4 V5 ...
rdlvd rdlvlual rdm random rdmd rodandotmatrixdi rdmd rodan dot matrix rdmi remote desktop m rdmi remotedesktopman rdm random rdm read from memory rdm readfrommemory rdm real c time data rdm relation document rdm relationdocumentm rdm remote diagnostic rdm remotediagnosticm rdm replica distribut...
matrix(nrow = 1, byrow = TRUE,dimnames= list(c('row1'),c('x','y'))) %>% as_tibble() %>% set_names('x','y') %>% mutate(m = (y/5)^0.5) 更优雅的方式(使用as_tibble_row方法) obe %>% mutate(y = x^2) %>% ...
矩阵是一个二维数组,矩阵中的每一个元素都拥有相同的模式(数值型、字符型或者逻辑型)。矩阵通过函数matrix()来创建。 MyMatrix <- matrix(vector, nrow=number_of_rows, ncol=number_of_cols, byrow=logical_value, dimnames=list(char_vector_rownames, char_vector_colnames)) ...
1、对矩阵的操作,可以利用matrix函数,并且,用rownames()函数给矩阵赋予名字 x rownames(x) x [,1] [,2] [,3] [,4] A 1 2 3 4 B 5 6 7 8 C 9 10 11 12 1. 2. 3. 4. 5. 6. 7. 2、对于矩阵的合并,按行合并或者按列合并cbind()\rbind() ...